Answer:
A. A life course perspective to define normal aging and to distinguish it from pathological aging.
Step-by-step explanation:
The continuity theory believes that normal aging process allows the older adults to maintain their adulthood lifestyle behaviors. For this purpose, the theory study the lifestyle choices and living behaviors of people in adulthood as it affects the aging process later in life. Hence, normal aging can be achieved by healthy diet, good sleep schedule and regular physical activity throughout life. This theory suggests that normal aging shall be distinguished from pathological aging to promote healthy living among communities.